Spring mattress



1931- E. B. BIRKENBEUEL 1,329,033

SPRING MATTRES S Filed March 5, 1928 3 Fig 7 1- Patented Oct. 27, 1931 PATENT OFFICE EDWARD 1B. BIRKENBEUEL, F PORTLAND, OREGON SPRING MATT REES Application filed March 5, 1928. Serial No. 259,231.

This invention relates generally to the upholsterers art, and particularly to mattresses.

The main object of this invention is to provide an exceedingly simple and eflicient form of spring mattress the construction of which will require onl the employment of a minimum amount 0 labor and materials, as well as a very limited amount of special equipment.

The second object is to construct a mattress which will be exceedingly comfortable for the sleeper and will eliminate entirely all lateral drawing caused by a weight being imposed on any particuar section thereof.

These, and other objects, will become more apparent from the specification following as illustrated in the accompanying drawings, in which: u s

Figure 1 is a plan of the shape of spring employed in th1s mattress. F1 re 2 is a fragmentary plan of the corner 0 a construction equipped with these springs with a portion broken away in section. Figure 3 is a section taken along the line 3-3 in Figure 2.

Fi ure 4 is a section taken along the line H in igure 2. Figure 5 is a section of a modified form of union between the spring-confining sheets. Figure 6 is a perspective view of a tubular connecting rivet used in conjunction with the modification shown in Figure 5. Figure 7 is a fragmentary plan showing how the units may be joined together. Figure 8 isa gection taken along the line 88 in Figure Similar numbers of reference refer to I similar parts throughout the several views.

ployed it is preferable to merely perforate the sheets in order to properly locate same, the grommets being applied in the assembling process. a

In some instances it may be preferable to provide each sheet 12 and 13 with its individual grommets 16, which, in turn, are securely joined together by means of an eyelet 17 provided with the projections 18, which are turned outwardly when both of the grommets 16 are in position on the eyelet 17.

The usual spacing between the biscuits of a mattress is about eight inches center to center and these units are so arranged that the will ordinarily not touch each other at al, although in some instances it might be found desirable to join the outermost portions of the units b means of clips 19 (as shown in Fi ures7an 8).

11 some instances it might be preferable to dispense with the grommets altogether and merely divide the units 10 by intersecting seamsthat is to say, between each row of units the sheets 12 and 13 would be sewed together across the entire width of the mattress, as well as the length, in which case each spring would be completely housed within an enclosed pocket of its own.

It may also be desirable when the units 10 are in position to pass a tufting cord 20 through the sheets 12 and 13 along the axis of the unit 10. This may be employed to provide initial tension in the spring member. Around the outside of the spring construction is sewed a heavy cord 21 which forms a semi-rigid border for the construction which facilitates its introduction into the mattress, and is still flexible enough to permit rolling the mattress, or otherwise handling same as much as is desired. The construction is then placed within the outer ticking 22 usually provided with the roll edges 23 and the ordinary tufing cord 24 which passes through the grommets 14 or 16 and further assists in preventing any shifting of the units within the mattress. Any type of filler 25 deemed desirable may, of course, be employed.

It is a matter of common knowledge that spring mattresses have long been constructed reac es employing helical springs which are confined in individual boxes, which constructions are objectionable owing to the tendency of springs of this nature to turn aside from a vertical position and ultimately become displaced within their compartments. Also it requires a great deal of labor to be expanded in the construction since partitions must be provided between the separate rows of w springs and each intersection of a partition must be separately sewed; whereas in this instance the partitions are dispensed with entirely and the springs themselves will tend to seek a'correct position rather than to try to escape therefrom.

I claim:

1. An insert for a mattress consisting of a plurality of disconnected ellipsoidal spring units arranged in rows and files, a sheet of fabric above and a sheet of fabric below all of said units and smoothly in contact therewith. means for securing the two sheets together between the units to form square pockets of such size as to permit a slight lateral movement to each unit within its pocket while retaining the units in rows and files.

2. The device of claim 1 in which the securing means are located at the corner of each pocket only, leaving the sides of each pocket open.

3. An insert for a mattress consisting of a plurality of disconnected ellipsoidal spring units arranged in rows and files, a sheet of fabric above and a sheet of fabric below all of said units and smoothly in contact therewith, means for securing the two sheets together between the units to form square pockets of such size as to permit a slight lateral movement to each unit within its pocket while retaining the units in rows and files, said securing means being annular whereby when the insert is in position between two layers of filler the mattress may be tufted thru the securing means without materially 4! limiting the free movement of the securing means.

4. A mattress having a top covering or ticking, a layer of filling below said ticking, a fabric sheet below said filling, a plurality ,In of ellipsoidal spring units in rows and files below said sheet, a lower fabric sheet below the units, a layer of filling below the lower sheet, a support below the last mentioned layer of filling, annular means securing together the sheets diagonally between adjacent units and tufting means extending from the ticking to the support thru said annular means.

EDWARD B. BIRKENBEUEL. 

